Abstract
We extend to curved backgrounds all flat-space scalar field models that obey purely second-order equations, while maintaining their second-order dependence on both field and metric. This extension simultaneously restores to second order the, originally higher derivative, stress tensors as well. The process is transparent and uniform for all dimensions.
- Received 10 June 2009
DOI:https://doi.org/10.1103/PhysRevD.80.064015
©2009 American Physical Society